book Maths Puzzle Numerical Ability

Does this parabola open up, down, left or right?

{{{x=-2y^2}}}

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book Other Question

A mixture of 12 liters of chemical A, 16 liters of chemical B, and 26 liters of chemical C is required to kill a destructive crop insect. Commercial spray X contains 1, 2, and 2 pa factor the following:

4x2 - 39x + 27

the 4x is squared

I am not sure if this is factorable or not